Answer:
[tex] \sqrt{18 } = ( \sqrt{2} )( \sqrt{9} ) = (3 \sqrt{2} ) \\ [/tex]
[tex] \sqrt{24} = ( \sqrt{6} )( \sqrt{4} ) = (2 \sqrt{6} ) [/tex]
[tex] \sqrt{54} = ( \sqrt{9} )( \sqrt{6} ) = (3 \sqrt{6} )[/tex]
[tex] \sqrt{72} = ( \sqrt{9} )( \sqrt{8} ) = (3)( \sqrt{4} )( \sqrt{2} ) = 3 \times 2( \sqrt{2} ) = 6 \sqrt{2} [/tex]
